Relationship of international law and municipal law — Treaties — Effect in municipal law — EEC Treaty, 1957 — Difference in provision of travel concessions to families of male and female employees upon retirement — Whether contrary to Section 6(2) of the Sex Discrimination Act 1975 — Whether discrimination within meaning of Article 119 of the EEC Treaty — Whether provision directly applicable — Whether discrimination contrary to two Council directives — Whether Section 6(4) of the Sex Discrimination Act 1975 to be construed in the light of the provisions of the EEC Treaty

Treaties — EEC Treaty, 1957 — Obligations of United Kingdom arising from international treaty — United Kingdom legislation to be construed so as not to conflict with prior treaty obligations — Special character of EEC Treaty, 1957 — Direct applicability of Article 119 of EEC Treaty — The law of England